TY - JOUR AU - Phillips, Ralph L. TI - Environmental factors contribute to acorn quality: Elevation, on- or off-tree collection influence the viability of blue oak acorns JF - California Agriculture JO - Calif Agr Y1 - 1992/09/01 VL - 46 IS - 5 SP - 30 EP - 32 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v046n05p30 AB - Concern about the regeneration of California's native oaks has inspired several investigations that indicate acorn quality is one of many factors affecting regeneration. A survey conducted in Kern County in 7990 indicates that elevation influences blue oak and valley oak acorn quality; location with regard to water drainage is another factor for blue oak acorns.